The Zeta is nice and easy to carry around, but to be quite honest, it plays nothing like a real double-bass (see: http://www.k1wd.com/music/bass/URB.jpg). There's no vibration, no "feel", very little character. Pizz. is OK, but arco is easier on a real double-bass (the large radius of the Zeta bridge makes it more difficult to bow)

I've hardly used My Zeta since I got My Double-Bass. Once you've played a double-bass, there is nothing else...